Arc 9The Sleeping Charm and the Black Dog
Will rescued Harry from the Quidditch storm, developed a new rune-based Sleeping Charm, and published research that brought him attention and scrutiny from magical academics. Meanwhile, he sheltered Sirius at the Shrieking Shack, but Sirius broke into Gryffindor Tower looking for Scabbers, intensifying Hogwarts’s security and the hunt for him.
- Will rejected Lucius’s plan to claim credit for others’ Potions work, arranged to publish his Potion Transfiguration research, and secretly fed Sirius in his black dog form.
- Will studied the improved Wolfsbane Potion with Snape, worked with Flitwick and Babbling on converting spells into charms, and developed a new rune-based Sleeping Charm.
- During the stormy Quidditch match, Dementors caused Harry to fall from his broom, and Will secretly rescued him as a phoenix before the Weasley twins returned him to Hogwarts.
- Will showed Flitwick his newly created rune, and together with Flitwick and Babbling he refined the Sleeping Charm and completed papers on Potion Transfiguration and Wolfsbane Potion.
- Will arranged food and shelter for Sirius at the Shrieking Shack with help from Hermione and Neville, but Sirius later entered Gryffindor Tower and tried to reach Scabbers.
- The Ministry increased Dementor and Auror patrols after the break-in, while Will’s papers spread through magical academia and Lucius arranged publicity for him.
- Snape brought Will to meet Fernando, who challenged the papers’ methods and contributions, and Will defended his research before leaving for lunch.